Microsoft Auto search API (beta) details surface: fast/advanced modes, 500K char cap
VeryWellVersed · x · 2026-11-06
- A conference demo revealed details of Microsoft's Auto REST API (beta, restricted to partners with WebIQ AppID enabled), highlighting that the freshness signal in returned results matters for models.
- Key details: POST to https://api.microsoft.ai/v3/auto with an API key or Microsoft Entra ID token; query supports site: and -site: operators; mode offers fast (speed-first) vs advanced (comprehensiveness-first); maxResponseLength defaults to 30000, clamped between 1500 and 500000; language, region, lat/long location and web/news response filters are supported.
- This is Microsoft's new interface for AI search/grounding scenarios, relevant to AEO and AI search optimization practitioners.
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